cheap but the instructions and tutorial is really lacking
The link has a lot of info except the essential stuff... Which electrode is which?! How to connect the electrodes?! Without this I simply couldn't use the EMG to connect to any muscle group. Additionally the trouble shoot code, the demo code requires additional library and additional LED component from them. Overall, wouldn't buy again, would go for the Myoware one. This seeedstudio one is horrible for EMG beginners.